REP52170 - Laserfiche WebLink

Home Browse Search

~uu~ ,.~ Terrell Johnson ~ S 5 October 18, 1985 ,L y l / i ) / lj ~y2~'-~i°~e ~4+r-ri ~cf .1~.-i4~.~. f~e~ I4r,..~r//n.e~~~/ c,1l~f .z rcP ~~ w(..~ it ~o~G.7}~/ lp~y (~ ~/p p ffq~ v~c.~}~ .~Y'~yo r: NrfJ ,/- Se.C PS 2~ Iw?~d~ q*i ~/~J~rn. ~L ~TL'{(y/j ! tsl...cA. tZ ~- 7~7 B. The spoils springs that have appeared at the mine need to be incorporated into the CYCC monitoring plan. The quality and quantity of all spoils discharye needs to be determined to assess hydrologic impacts and ensure that CYCC remains in compliance with our Act and is not causing material damage. CYCC needs to propose and submit mon~,i`}to,~/•ing pro ram that properly addresses the spoils water issue. Es~~s'r,~;~,4~,r ~~,.n~1sFFiM C. The list of parameters to be analyzed for hydrologic samples needs to be ~~(~ revised to include receiving stream standards which were noted as a concern of ~d your discharge points. This is necessary to assess material damage findings. ~~P-, It is also probable that other parameters may be deleted from your ~~„.lo'`. requirements if it has been shown they are not a concern. T}. Pliu ~ 1 Y Od•Sly D. CYCC should reevaluate the entire hydrologic monitoring plan to determine/%r~ whether the information collected adequately covers projected impacts from t e +,~ mine. It is probable that some monitoring sites are of little use and could~~ ~~ ~, be suspended from the program (this also applies to Mine No. 3). J^*~.. ivoi~w.e v..u,.S4 cS~n~~ l„t ~ntlmuy ~;,,w'.` E. A schedule for completing pump tests on spoil wells needs to be submitted ~G,~ • to comply with CYCC's commitment on pages 780-~72( ) f t e a lic on /¢~~%~`~ (unless they have already been completed). ~7 ~~ ~"~~~~~;,,,.. F. CYCC needs to remodel the spoils aquifer system and revise the statement of probable hydrologic consequences. Specifically, spoils discharges were not predicted in the original application (or midterm response) and need to be addressed. CYCC needs to explain what has happened and what will happen to spoil discharges, spoil water quality, and receiving streams. A strategy to accomplish this should be worked out with the Division. Addressing this issue is necessary for the Division to be able to continue to find your operation to be in compliance. It will also be important if a y extensions to the mine plan area are to-be requested. T1P~~y ~~~ a ~ w~" ~ ~_~ G. CYCC needs to address the elevated TDS and sulfate levels that have been noted in Fish and Foidel Creeks adjacent to the mines. A discussion of the water and mass balance situation for both creeks is needed. Predictions of stream quality in future years during high and low flow should be reassessed in light of existing data on spoil aquifer discharges. I believe that if CYCC and MLRD staff can work together on these issues we can arrive at solutions that are effective and more manageable to CYCC. Rather than impose deadlines for completing the above requirements we want to give CYCC the chance to review our concerns and propose a schedule. If possible I suggest we meet to see if we are in agreement on the issues and discuss how and when to resolve them. Please inform me within 10 days of how you want to proceed.